Gluten Free and Casein Free Diet:

• Limited research 

Facilitated Communication:  

• No scientific evidence of the validity of FC.

• Messages are authored by the "facilitator" rather than the person with a disability.

• Extensive evidence of harms related to the use of FC.

Auditory Integration Therapy:

• Does not meet scientific standards for efficacy and safety.

Vitamins and Supplements:

• No review of studies showing efficacy of vitamins and supplements in treating symptoms of autism.